Dental apparatus



Oct. 26 1926..

A. F. PIEPER DENTAL APPARATUS Filed Sept. 2O

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Eatented let.. 26, 19295.`

ALPHONSE FEPIEPER, F ROCHESTER, NEW YORK.

DENTAL APPARATUS.

Application led September 20, 1923. Serial No. 663,891.

This invention relates to dental apparatus and more particularly tofixtures for dental chairs or equipment pedestals for supportingequipment such as handV tools, supplies and the like Within convenientreach et the dentist, thepresent invention being in the nature oi. animprovement on the `tray fixtures disclosed in Letters Patent lilo.1,376,356 granted jointly t-o` Oscar H. Pieper and myself April 26,1921, for unitary dental apparatus and in the Letters lfatent No.1,511,422, granted to Oscar H. Pieper October 1li, 1924, for `dentalappa ratus. The chief object ci the present invention is to provide adevice ot the above character oi a more simple and advantageousconstruction capable oi: being iijianuiactured at a loiver costc Tothese and other ends the invention resides iii cert-ain improvements,andcombinations el' parts all as will be hereinafter more fully decljibed,the novel "features being pointed ont in the claims at the end oi thespecilicatien. y

ln the drawings:

llig. 1 is an elevation ot a unitary apparatus stand or pedestal havingthe present invention applied thereto;

Fig. 2 an enlarged plan view of the Fig. 3 is a vertical central sectionthrough the parts shown in Fig. 2;

Similar reference numerals througffhout the several views indicate thesame parts.

The preferred embodiment of the invention disclosed herein as applied toa unitary dental apparatus stand or pedestal, ci the character disclosedin said Letters Patent :tor supporting equipment such as a cuspidcrfixture, dental engine, hand tools and implements and the lile, but isof course otherwise applicable, as, for example, in connection vvith adental chair. The tray iiirture is in this instance carried by abranching pedestal arm 6 provided for the dental engine. This branchingarm has pivotally mounted thereon an arm 7 at the outer end or which ispivotally carried a supporting arm 8 for the tray indicated generally at9, it being apparent that the pivetal adjustment of the arms 7 and 8provides for a substantial range in movement for the tray for adjustingthe same to various accessible positions as required by the ivoi'k inhand.

The supporting arm S has lined in its out er end an upwardly projectingstud 10 preierably tapered outwardly from top to bottom as shown.Rotatably mounted on this stud is asuppoiting member or 'framecoinprising preierably` a hub portion 11 having a central taperedepeninglitting the stud 10. The hub thus rotates ireely on the stud and thetaper of the parts supports the hub ver tically and at the same timeprovides Jfor automatically taking up Wear in use to maintain a closelit. A screw 12 in the upper end of the stud holds the hub againstremoval. means or arms 13 carrying a circular rim le provided `with anupwardly pojecting flange 15 embraced and covered by a channel orU-sliaped strip 16 oi cushioning material, such as rubber. Strip 1G thusprovides for the supporting member or frame a peripherally extendingseat on which is supported a plate or tray 17 preferably of vitreousniaterial adapted to receive hand tools, implements, supplies and thelike. Preferably the tray has `an upwardly extending iiange 18 i'orretaining articles thereon and on its under side7 lspaced inivardly fromthe periphery is a depending flange 19 cooperating with abutment meansor lugs 20 carride on the radial arms 13. The Weight oit' the tray iscarried 'entirely on the cushioned seat described, While the cooperatingabut ment means 19 and 2O serve to maintain the tray in properlycentered position on the supporting frame.

The supporting trame is thus of a simple, substantial and integral formot construction capable oit being practically manufactui'ed as a metalcasting at a low cost. The cushioning strip is readily secured in placeas for example by the application of a suitable cement, While the frameas a Whole is carried on a simple and eiiective pivotal mounting, theconstruction of which maintains a neat bearing fit. As pointed out inthe said copending application for patent, the bottoni flange of thetray not only serves to position the latter in use but also to space thetrays when nested together in quantities for shipment to preventchipping contact of the edges of one with another. The construction issuch that the tray may be corr The hub has radially extending venientlyremoved for cleaning and replaced in proper position on the supportingframe and the parte as a whole have a simplicity of arrangement andoutline affording anattractive appearance.

I claim as my invention:

l. In a dental apparatus, t-he combination of a supporting arm, asupporting member' rotatably carried on said arm and having aperipherally disposed'seat ofV cushioning m-aterial, an instrument` traysupported on said seat and co-voperating abutments on said member andtray located inwardly of the seat and adapted Yfor centering the latteron said-member.

2; In adental apparatus, the combination of a supporting arm, asupporting mem-ber rotatably carried onrsaid arm, an upwardly projectingperipheral flange on' said member provided "with cushioning material, aninstrument-A tray supported on said material and cooperatingabutm-entson said'member and tray located inwardly of the flange andl adapted torcentering the tray on said member.

3. AIn a dental apparatus', the combinationV ofa supporting arm, asupporting memberv rotatably carried on said arm, an upwardlyprojecting. peripheral'flange on said member providedV with cushioningmaterial, abutment means on said member inwardlyofsaid flange, and aninstrument tray supported on said material and. having dependingabutment means cooperating with the abutment means. on said member toprevent lateral 5. In a dental apparatus, the combination of asupporting arm, a supporting member comprising a hub portion rotatablysupported on said arm with radially extending meansca-rrying a rimprovided with an upwardly; projecting lian-ge, cushioning material onsaid flange, abutmentl means on said radially .extending means and aninstrument tray supported on Said material and having a depending flangecooperating with said abutment means for positioning said tray;

6j 'In ay den-talV apparatus, the combination of a supporting arm, .asupporting member rotatably carried on said" arm, an upwardly projectingperipheral flange on said member, a channeled strip of cushioningmaterial enr bracing and covering said flange, abutment means on4 saidfmember, and an instrument tray'supported onv saidv material strip and.

having 'ay depending, flange for cooperation with said abutmentmeans.

'In a' dental apparatus', the combination of a supporting arm,afsupporting frame comprising ahub portion rotatably mounted on said'arm with radially extending arms carrying'a circular rim, an upwardlyturned llangeon` said rim, cushioning material on said flange, lugs onsaid'radial arms and an instrument tray supported on said'material andhaving a depending lflange for engagement with said lugs to center saidtray in position.- V

8".' In a dental apparatus, rthercombination of` a supporting arm,having an upwardly extending tapered stud, a frame having a taperedbearing rotatably supporting the same on said stud, a. peripherallyextending seat of cushioning materia-l on said frame, an instrument trayremovably supported on said seat,'and cooperating portions on theframe'and'tray for centering the latter upon the frame, said portionsbeing located inwardly of `saidcushioning material.

ALPHONSE F. PIEPER.

